We have used ECM for the past year and really like it. They scan your envelopes and you look at it online and make a decision to shred, scan the contents, forward to you. They have several states PO boxes to choose from for your address. We were already residents of Texas and chose a Dallas PO box.
've looked at locations in Florida this winter. Some of those services also have a Mail Scan service. If they have this service... I'd bet other locations are going to offer it as well.
We each have different circumstances... reasons we need different services. This might save the cost of forwarding mail... which should reduce the cost of postage.